25, 49, 81, 225
If by 'perfect number' you mean 'perfect SQUARE', then yes. 49 is an odd number and a perfect square.
The square of any odd integer is an odd square number. For example, 3^2 = 9.
1 is odd and a perfect square.
-1 is an odd number but not a perfect square.
A perfect square has an odd number of factors.
An odd number.
if a number has an odd number of factors it would be a perfect square
if a number has an odd number of factors it would be a perfect square
A perfect square.
A square number or a perfect square.
A perfect square.
A perfect square.